Following the behemoth that was Avengers: Endgame, Ant-Man 3 is one of the many projects Marvel Studios currently has in the works. Not much is known about the project thus far, but we do know that the story has been figured out. Now, it would appear that the threequel has tapped has found a new cast member in the form of a Lovecraft Country star, and his character could have massive ramifications on the MCU moving forward.
Article source: https://www.cinemablend.com/news/2554666/ant-man-3-has-just-added-a-lovecraft-country-star-in-a-major-role